Abstract
For models of the Sun and Sun-like stars, a high-quality equation of state is crucial. In addition, helioseismic and asteroseismic observations also put constraints on the physical formalisms. Thus, they effectively turn the Sun and the stars into laboratories for dense plasmas. Currently, the main astrophysical beneficiary of a good equation of state is the determination of the chemical composition. Here, seismic data have supplemented spectroscopic information. Recently, there has been theoretical progress in the equation of state, thanks to renewed rigorous and phenomenological approaches.
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Däppen, W. Accurate and versatile equations of state for the Sun and Sun-like stars. Astrophys Space Sci 328, 139–146 (2010). https://doi.org/10.1007/s10509-010-0269-2
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DOI: https://doi.org/10.1007/s10509-010-0269-2